CVE-2006-5804: PHP remote file inclusion vulnerability in admin.php in Advanced Guestbook 2.3.1 allows remote attackers to ex

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HIGH 7.5DOWNGRADE

CVE-2006-5804 is a high-severity flaw (CVSS 7.5) affecting advanced guestbook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP remote file inclusion vulnerability in admin.php in Advanced Guestbook 2.3.1 allows remote attackers to execute arbitrary PHP code via a URL in the include_path parameter.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.0% (top 20%)
CISA exploited list	No
Published	2006-11-08
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: advanced guestbook

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2006-11-08 20:07 UTCPublished CVE record published
2026-06-16 22:31 UTCUpdated Record last modified

advanced guestbook advanced guestbook DOWNGRADE

Affected: 2.3.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.3.1

1. Check installed version

apt-cache policy advanced-guestbook || rpm -q advanced-guestbook || advanced-guestbook --version

2. No fixed release: DOWNGRADE to a release before 2.3.1 (Debian / Ubuntu)

apt-cache madison advanced-guestbook sudo apt install advanced-guestbook=<VERSION_BEFORE_2.3.1> sudo apt-mark hold advanced-guestbook

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list advanced-guestbook sudo dnf downgrade advanced-guestbook-<VERSION_BEFORE_2.3.1> sudo dnf versionlock add advanced-guestbook

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2006-5804?

advanced guestbook: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-5804 being exploited?

CVE-2006-5804 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2006-5804 affect?

CVE-2006-5804 affects advanced guestbook. Severity is high (CVSS 7.5). PHP remote file inclusion vulnerability in admin.php in Advanced Guestbook 2.3.1 allows remote attackers to execute arbitrary PHP code via a URL in the include_path parameter.

How urgent is CVE-2006-5804?

Priority 51/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2007-0609 MEDIUM 5.1 DOWNGRADE Directory traversal vulnerability in Advanced Guestbook 2.4.2 allows remote attackers to bypass .htaccess sett
CVE-2007-0608 HIGH 7.1 DOWNGRADE Advanced Guestbook 2.4.2 allows remote attackers to obtain sensitive information via an invalid (1) GB_TBL par
CVE-2007-0605 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in picture.php in Advanced Guestbook 2.4.2 allows remote attackers to
CVE-2007-0530 HIGH 7.5 DOWNGRADE Multiple PHP remote file inclusion vulnerabilities in Advanced Guestbook 2.4.2 allow remote attackers to execu
CVE-2005-4649 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in Advanced Guestbook 2.2 and 2.3.1 allow remote attackers

References

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